Heterocyclic carboxylic acid derivatives, the production and use thereof as endothelin receptor antagonists

ABSTRACT

The present invention relates to carboxylic acid derivatives of the formula Iwhere the substituents have the meanings explained in the description, and to preparation and use as endothelin receptor antagonists.

This application is a 371 of PCT/EP 97/06778 filed Dec. 4, 1997.

The present invention relates to novel carboxylic acid derivatives, their preparation and use.

Endothelin is a peptide made up of 21 amino acids, which is synthesized and released by vascular endothelin. Endothelin exists in three isoforms, ET-1, ET-2 and ET-3. In the following, endothelin or ET designates one or all isoforms of endothelin. Endothelin is a potent vasoconstrictor and has a strong effect on the vascular tone. It is known that this vasoconstriction is caused by the binding of endothelin to its receptor (Nature, 332 (1988), 411-415; FEBS Letters, 231 (1988), 440-444, and Biochem. Biophys. Res. Commun., 154 (1988), 868-875).

Increased or abnormal release of endothelin causes a lasting vascular contraction in peripheral, renal and cerebral blood vessels which can lead to illnesses. As reported in the literature, endothelin is involved in a number of illnesses. These include: hypertension, acute myocardial infarct, pulmonary hypertension, Raynaud's Syndrome, cerebral vasospasms, stroke, benign prostate hypertrophy, atherosclerosis and asthma (J. Vascular Med. Biology 2 (1990), 207, J. Am. Med. Association 264 (1990), 2868, Nature 344 (1990), 114, N. Engl. J. Med. 322 (1989), 205, N. Engl. J. Med. 328 (1993), 1732, Nephron 66 (1994), 373, Stroke 25 (1994), 904, Nature 365 (1993), 759, J. Mol. Cell. Cardiol. 27 (1995), A234; Cancer Research 56 (1996), 663).

At least two endothelin receptor subtypes, ET_(A) and ET_(B) receptors, are at present described in the literature (Nature 348 (1990), 730, Nature 348 (1990), 732). Accordingly, substances which inhibit the binding of endothelin to one or to both receptors should antagonize physiological effects of endothelin and therefore be useful pharmaceuticals.

It is an object of the present invention to make available endothelin receptor antagonists which bind to the ET_(A) and/or the ET_(B) receptors.

The invention relates to carboxylic acid derivatives of the formula I

[lacuna] R¹ is tetrazole or a group

where R has the following meanings:

a) a radical OR⁶, where R⁶ is:

hydrogen, the cation of an alkali metal, the cation of an alkaline earth metal, a physiologically tolerable organic ammonium ion such as tertiary C₁-C₄-alkylammonium or the ammonium ion;

C₃-C₈-cycloalkyl, C₁--C₈-alkyl, CH₂-phenyl which can be substituted by one or more of the following radicals: halogen, nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, hydroxyl, C₁-C₄-alkoxy, mercapto, C₁-C₄-alkylthio, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂;

a C₃-C₈-alkenyl or a C₃-C₈-alkynyl group, it being possible for these groups in turn to carry one to five halogen atoms;

R⁶ can furthermore be a phenyl radical which can carry one to five halogen atoms and/or one to three of the following radicals: nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, hydroxyl, C₁-C₄-alkoxy, mercapto, C₁-C₄-alkylthio, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂;

b) a 5-membered heteroaromatic linked via a nitrogen atom, such as pyrrolyl, pyrazolyl, imidazolyl or triazolyl, which can carry one to two halogen atoms, or one to two C₁-C₄-alkyl or one to two C₁-C₄-alkoxy groups;

c) a group

where k [lacuna] assume the values 0, 1 and 2, p can assume the values 1, 2, 3 and 4 and R⁷ is

C₁-C₄-alkyl, C₃-C₈-cycloalkyl, C₃-C₈-alkenyl, C₃-C₈-alkynyl or phenyl, which can be substituted by one or more, eg. one to three, of the following radicals: halogen, nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, hydroxyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, mercapto, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂;

d) a radical

where R⁸ is:

C₁-C₄-alkyl, C₃-C₈-alkenyl, C₃-C₈-alkynyl, C₃-C₈-cycloalkyl, it being possible for these radicals to carry a C₁-C₄-alkoxy, C₁-C₄-alkylthio and/or a phenyl radical as mentioned under c);

C₁-C₄-haloalkyl or unsubstituted or substituted phenyl, in particular as mentioned under c).

The other substituents have the following meanings:

X is nitrogen or methine; with the proviso that if X=nitrogen then Z=nitrogen and if X=methine then at least one of the ring members Y or Z is nitrogen;

Y is nitrogen or CR⁹;

Z is nitrogen or CR¹⁰;

R² is C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, it being possible for these radicals each to be mono- or polysubstituted by: halogen, hydroxyl, mercapto, carboxyl, cyano, amino, C₁-C₄-alkoxy;

hydrogen, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₃-C₆-alkenyloxy, C₃-C₆-alkynyloxy, C₁-C₄-alkylthio, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)_(2,) hydroxyl, carboxyl, cyano, amino, mercapto;

or CR² together with CR⁹ or CR¹⁰ forms a 5- or 6-membered alkylene or alkenylene ring which can be substituted by one or two C₁-C₄-alkyl groups, and where in each case one or more methylene groups can be replaced by oxygen, sulfur, —NH or —N(C₁-C₄-alkyl);

R³ and R⁴ (which can be identical or different) are:

phenyl or naphthyl, which can be substituted by one or more of the following radicals: halogen, nitro, cyano, hydroxyl, mercapto, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, phenoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂ or phenyl, which can be mono- or polysubstituted, eg. mono- to trisubstituted by halogen, nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy or C₁-C₄-alkylthio; or

phenyl or naphthyl, which are connected to one another in the ortho position via a direct bond, a methylene, ethylene or ethenylene group, an oxygen or sulfur atom or an SO₂—, NH— or N-alkyl group;

C₃-C₈-cycloalkyl, it being possible for these radicals in each case to be mono- or polysubstituted by: halogen, hydroxyl, mercapto, carboxyl, nitro, cyano, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy;

R⁵ is hydrogen, C₁-C₈-alkyl, C₃-C₈-alkenyl or C₃-C₈-alkynyl, it being possible for these radicals in each case to be mono- or polysubstituted by: halogen, hydroxyl, mercapto, carboxyl, nitro, amino, cyano, C₁-C₄-alkoxy, C₃-C₆-alkenyloxy, C₃-C₆-alkynyloxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, C₃-C₈-alkylcarbonylalkyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂,

C₃-C₈-cycloalkyl, heteroaryloxy or heteroaryl, which is five-or six-membered, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom, phenoxy or phenyl, it being possible for the aryl radicals mentioned in turn to be mono- or polysubstituted, eg. mono- to trisubstituted by halogen, hydroxyl, mercapto, carboxyl, nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂ or C₁-C₄-alkylthio;

phenyl or naphthyl, which in each case can be substituted by one or more of the following radicals: halogen, nitro, cyano, hydroxyl, amino, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, phenoxy, C₁-C₄-alkylthio, C₁-C₄-alkylamino, C₁-C₄-dialkylamino, dioxomethylene or dioxoethylene;

a five- or six-membered heteroaromatic, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom, which can carry one to four halogen atoms and/or one to two of the following radicals: C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, phenyl, phenoxy or phenylcarbonyl, it being possible for the phenyl radicals in turn to carry one to five halogen atoms and/or one to three of the following radicals: C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy and/or C₁-C₄-alkylthio;

C₃-C₈-cycloalkyl, it being possible for these radicals in each case to be mono- or polysubstituted by: halogen, hydroxyl, mercapto, carboxyl, nitro, cyano, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy;

R⁹ and R¹⁰ (which can be identical or different) are:

hydrogen, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₃-C₆-alkenyloxy, C₃-C₆-alkynyloxy, C₁-C₄-alkylthio, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, NH₂, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂;

C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, it being possible for these radicals to be substituted by halogen, hydroxyl, mercapto, carboxyl, cyano;

or CR⁹ or CR¹⁰ is linked with CR² as indicated under R² to give a 5- or 6-membered ring;

W is sulfur, oxygen or a single bond;

Q is oxygen or nitrogen; with the proviso that if Q=nitrogen then W is a single bond.

In this context and subsequently the following definitions apply:

an alkali metal is, for example, lithium, sodium, potassium;

an alkaline earth metal is, for example, calcium, magnesium, barium;

organic ammonium ions are protonated amines such as, for example, ethanolamine, diethanolamine, ethylendiamine diethylamine or piperazine;

C₃-C₈-cycloalkyl is, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl;

C₁-C₄-haloalkyl can be linear or branched such as, for example, fluoromethyl, difluoromethyl, trifluoromethyl, chlorodifluoromethyl, dichlorofluoromethyl, trichloromethyl, 1-fluoroethyl, 2-fluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, 2-chloro-2,2-difluoroethyl, 2,2-dichloro-2-fluoroethyl, 2,2,2-trichloroethyl or pentafluoroethyl;

C₁-C₄-haloalkoxy can be linear or branched such as, for example, difluoromethoxy, trifluoromethoxy, chlorodifluoromethoxy, 1-fluoroethoxy, 2,2-difluoroethoxy, 1,1,2,2-tetrafluoroethoxy, 2,2,2-trifluoroethoxy, 2-chloro-1,1,2-trifluoroethoxy, 2-fluoroethoxy or pentafluoroethoxy;

C₁-C₄-alkyl can be linear or branched such as, for example, ethyl, ethyl, 1-propyl, 2-propyl, 2-methyl-2-propyl, 2-methyl-1-propyl, 1-butyl or 2-butyl;

C₂-C₄-alkenyl can be linear or branched such as, for example, ethenyl, 1-propen-3-yl, 1-propen-2-yl, 1-propen-1-yl, 2-methyl-1-propenyl, 1-butenyl or 2-butenyl;

C₂-C₄-alkynyl can be linear or branched such as, for example, ethynyl, 1-propyn-1-yl, 1-propyn-3-yl, 1-butyn-4-yl or 2-butyn-4-yl;

C₁-C₄-alkoxy can be linear or branched such as, for example, methoxy, ethoxy, propoxy, 1-methylethoxy, butoxy, 1-methylpropoxy, 2-methylpropoxy or 1,1-dimethylethoxy;

C₃-C₆-alkenyloxy can be linear or branched such as, for example, allyloxy, 2-buten-1-yloxy or 3-buten-2-yloxy;

C₃-C₆-alkynyloxy can be linear or branched such as, for example, 2-propyn-1-yloxy, 2-butyn-1-yloxy or 3-butyn-2-yloxy;

C₁-C₄-alkylthio can be linear or branched such as, for example, methylthio, ethylthio, propylthio, 1-methylethylthio, butylthio, 1-methylpropylthio, 2-methylpropylthio or 1,1-dimethylethylthio;

C₁-C₄-alkylcarbonyl can be linear or branched such as, for example, acetyl, ethylcarbonyl or 2-propylcarbonyl;

C₁-C₄-alkoxycarbonyl can be linear or branched such as, for example, methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, i-propoxycarbonyl or n-butoxycarbonyl;

C₃-C₈-alkylcarbonylalkyl can be linear or branched, for example 2-oxoprop-1-yl, 3-oxobut-1-yl or 3-oxobut-2-yl;

C₁-C₈-alkyl can be linear or branched such as, for example, C₁-C₄-alkyl, pentyl, hexyl, heptyl or octyl; C₃-C₈-alkenyl can be linear or branched such as, for example, 1-propen-3-yl, 1-propen-2-yl, 1-propen-1-yl, 2-methyl-1-propenyl, 1-buten-4-yl, 2-buten-3-yl, 1-penten-5-yl, 1-hexen-6-yl, 3-hexen-6-yl, 2-hepten-7-yl or 1-octen-8-yl;

C₃-C₈-alkynyl can be linear or branched such as, for example, 1-propyn-1-yl, 1-propyn-3-yl, 1-butyn-4-yl, 2-butyn-4-yl, 2-pentyn-5-yl, 3-hexyn-6-yl, 3-heptyn-7-yl, 2-octyn-8-yl;

halogen is, for example, fluorine, chlorine, bromine, iodine.

The invention further relates to those compounds from which the compounds of the formula I can be released (prodrugs).

Those prodrugs are preferred in which the release proceeds under conditions of the type which prevail in certain body compartments, eg. in the stomach, intestine, blood circulation, liver.

The compounds I and also the intermediates for their preparation, such as, for example, II, III, IV and V, can have one or more asymmetrically substituted carbon atoms. Compounds of this type can be present as pure enantiomers or pure diastereomers or as a mixture thereof. The use of an enantiomeric pure compound as the active compound is preferred.

The invention further relates to the use of the abovementioned carboxylic acid derivatives for the production of drugs, in particular for the production of inhibitors for ET_(A) and/or ET_(B) receptors. The compounds according to the invention are suitable as antagonists, as were defined at the outset.

The preparation of the compounds of the general formula IV, where W is sulfur or oxygen and Q is oxygen (IVa) can be carried out, also in enantiomerically pure form, as described in WO 96/11914.

Compounds of the general formula III are either known or can be synthesized, for example, by reduction of the corresponding carboxylic acids or their esters, or by other generally known methods.

The compounds of the general formula IV, where W is a single bond and Q is oxygen (VIb), can be prepared both in racemic and in enantiomerically pure form as described in DE 19614533.3.

On the other hand, the compounds of the general formula IV, where W is a single bond and Q is nitrogen (IVc) can be prepared both in racemic form and in enantiomerically pure form as described in DE 19536891.6.

The compounds according to the invention, where the substituents have the meanings indicated under the general formula I, can be prepared, for example, by reacting the carboxylic acid derivatives of the general formula IV, in which the substituents have the meanings indicated, with compounds of the general formula VII.

In formula VII, R¹¹ is halogen or R¹²—SO₂—, it being possible for R¹² to be C₁-C₄-alkyl, C₁-C₄-haloalkyl or phenyl, and for X, Y and Z the conditions mentioned at the outset apply. The reaction preferably takes place in an inert solvent or diluent with addition of a suitable base, ie. of a base which brings about deprotonation of the intermediate IV, in a temperature range from room temperature up to the boiling point of the solvent.

Compounds of the type I where R¹=COOH can furthermore be obtained directly if the intermediate IV, where R¹ is COOH, is deprotonated using two equivalents of a suitable base and reacted with compounds of the general formula V. Here also, the reaction takes place in an inert solvent and in a temperature range from room temperature up to the boiling point of the solvent.

Examples of solvents or diluents of this type are aliphatic, alicyclic and aromatic hydrocarbons, which in each case can be free or chlorinated, such as, for example, hexane, cyclohexane, petroleum ether, naphtha, benzene, toluene, xylene, methylene chloride, chloroform, carbon tetrachloride, ethyl chloride and trichloroethylene, ethers, such as, for example, diisopropyl ether, dibutyl ether, methyl tert-butyl ether, propylene oxide, dioxane and tetrahydrofuran, nitrites, such as, for example, acetonitrile and propionitrile, acid amides, such as, for example, dimethylformamide, dimethylacetamide and N-methylpyrrolidone, sulfoxides and sulfones, such as, for example, dimethyl sulfoxide and sulfolane.

Compounds of the formula VII are known, in some cases commercially available or can be prepared in a generally known manner (eg. in a similar manner to J. Org. Chem. 52 (1987), 4280).

The base used can be an alkali metal or alkaline earth metal hydride, such as sodium hydride, potassium hydride or calcium hydride, a carbonate such as an alkali metal carbonate, eg. sodium or potassium carbonate, an alkali metal or alkaline earth metal hydroxide such as sodium or potassium hydroxide, an organometallic compound such as butyllithium or an alkali metal amide such as lithium diisopropylamide or lithium amide.

Compounds of the formula I can also be prepared by starting from the corresponding carboxylic acids, ie. compounds of the formula I where R¹ is COOH, and first converting these in a customary manner into an activated form such as an acid halide, an anhydride or imidazolide and then reacting this with an appropriate hydroxyl compound HOR⁷. This reaction can be carried out in the customary solvents and often requires the addition of a base, those mentioned above being suitable. These two steps can also be simplified, for example, by allowing the carboxylic acid to act on the hydroxyl compound in the presence of a dehydrating agent such as a carbodiimide.

Moreover, compounds of the formula I can also be prepared by starting from the salts of the corresponding carboxylic acids, ie. from compounds of the formula I where R¹ is COR and R is OM, it being possible for M to be an alkali metal cation or the equivalent of an alkaline earth metal cation. These salts can be reacted with many compounds of the formula R-A, A being a customary nucleofugic leaving group, for example halogen such as chlorine, bromine, iodine or, if desired, aryl- or alkylsulfonyl substituted by halogen, alkyl or haloalkyl, such as, for example, toluenesulfonyl and methylsulfonyl or another equivalent leaving group. Compounds of the formula R-A having a reactive substituent A are known or easy to obtain using the general expert knowledge. This reaction can be carried out in the customary solvents and is advantageously performed with addition of a base, those mentioned above being suitable.

Compounds of the formula I where R¹ is tetrazole can be prepared as described in WO 96/11914.

With respect to the biological action, carboxylic acid derivatives of the general formula I, both as pure enantiomers and pure diastereomers or as a mixture thereof, are preferred where the substituents have the following meanings:

X is nitrogen or methine; with the proviso that if X=nitrogen then Z=nitrogen and if X=methine then at least one of the ring members Y or Z=nitrogen;

Y is nitrogen or CR⁹;

Z is nitrogen or CR¹⁰;

R² is C₁-C₄-alkyl, C₂-C₄-alkenyl, it being possible for these radicals each to be mono- to trisubstituted by: halogen, hydroxyl, mercapto;

hydrogen, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, C₁-C₄-alkoxycarbonyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)_(2,) hydroxyl;

or CR², together with CR⁹ or CR¹⁰, forms a 5- or 6-membered alkylene or alkenylene ring which can be substituted by one or two C₁-C₄-alkyl groups, and where in each case one or more methylene groups can be replaced by oxygen, sulfur, —NH or —N(C₁-C₄-alkyl);

R³ and R⁴ (which can be identical or different) are:

phenyl or naphthyl, it being possible for these radicals to be mono- to trisubstituted by: halogen, cyano, hydroxyl, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, amino, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂ or phenyl, which can be mono- to trisubstituted by halogen, nitro, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy or C₁-C₄-alkylthio; or

phenyl or naphthyl, which are bonded to one another in the ortho position via a direct bond, a methylene, ethylene or ethenylene group, an oxygen or sulfur atom or an SO₂—, NH— or N-alkyl group;

C₃-C₈-cycloalkyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, hydroxyl, mercapto, cyano, C₁-C₄-alkyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy;

R⁵ is hydrogen, C₁-C₈-alkyl, C₃-C₈-alkenyl or C₃-C₈-alkynyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, hydroxyl, mercapto, carboxyl, amino, cyano, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, C₃-C₈-cycloalkyl, heteroaryloxy or heteroaryl, five- or six-membered, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom, phenoxy or phenyl, it being possible for the aryl radicals mentioned in turn to be mono- to trisubstituted by halogen, hydroxyl, mercapto, cyano, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, NH(C₁-C₄-alkyl) or N(C₁-C₄-alkyl)₂;

phenyl or naphthyl, which in each case can be mono- to trisubstituted by: halogen, cyano, hydroxyl, amino, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, phenoxy, C₁-C₄-alkylthio, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, dioxomethylene or dioxoethylene;

a five- or six-membered heteroaromatic, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom which can carry one to four halogen atoms and/or one to two of the following radicals: C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, phenyl, phenoxy or phenylcarbonyl, it being possible for the phenyl radicals in turn to carry one to five halogen atoms and/or one to three of the following radicals: C₁-C₄-alkyl, C₁-C₄-haloalkyl, C_(l)-C₄-alkoxy, C₁-C₄-haloalkoxy and/or C₁-C₄-alkylthio;

C₃-C₈-cycloalkyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, hydroxyl, mercapto, C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-haloalkoxy;

R⁹ and R¹⁰ (which can be identical or different) are:

hydrogen, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, NH₂, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, hydroxyl;

C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, it being possible for these radicals to be substituted by halogen, hydroxyl, mercapto, cyano;

or CR⁹ or CR¹⁰ is linked to CR² as indicated under R² to give a 5- or 6-membered ring;

W is sulfur, oxygen or a single bond;

Q is oxygen or nitrogen, with the proviso that if Q=nitrogen then W is a single bond.

Particularly preferred compounds of the formula I, both as pure enantiomers and pure diastereomers or as a mixture thereof, are those in which the substituents have the following meanings:

X is nitrogen or methine; with the proviso that if X=nitrogen then Z=nitrogen and Y=CR⁹ and if X=methine then Y=nitrogen and Z=CR¹⁰ or Y=CR⁹ and Z=nitrogen;

Y is nitrogen or CR⁹;

Z is nitrogen or CR¹⁰;

R² is C₁-C₄-alkyl, trifluoromethyl, hydrogen, fluorine, C₁-C₄-alkoxy, trifluoromethoxy, C₁-C₄-alkylthio;

or CR², together with CR⁹ or CR¹⁰, forms a 5- or 6-membered alkylene or alkenylene ring, which can be substituted by one or two C₁-C₄-alkyl groups, and where in each case one or more methylene groups can be replaced by oxygen or sulfur;

R³ and R⁴ (which can be identical or different) are:

phenyl or naphthyl, which can be substituted by one or more of the following radicals: halogen, cyano, C₁-C₄-alkyl, trifluoromethyl, C₁-C₄-alkoxy, trifluoromethoxy, C₁-C₄-alkylthio or phenyl, which can be mono- to trisubstituted by halogen, C₁-C₄-alkyl, trifluoromethyl, C₁-C₄-alkoxy or C₁-C₄-alkylthio; or

phenyl or naphthyl, which are connected in the ortho position via a direct bond, a methylene, ethylene or ethenylene group;

C₅-C₆-cycloalkyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, C₁-C₄-alkyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio;

R⁵ is hydrogen, C₁-C₈-alkyl, C₃-C₈-alkenyl or C₃-C₈-alkynyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, hydroxyl, mercapto, carboxyl, cyano, amino, C₁-C₄-alkoxy, C₁-C₄-alkylthio, C₁-C₄-alkoxycarbonyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, C₃-C₈-cycloalkyl, heteroaryloxy or heteroaryl, five- or six-membered, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom, phenoxy or phenyl, it being possible for the aryl radicals mentioned in turn to be mono- to trisubstituted by halogen, cyano, hydroxyl, C₁-C₄-alkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, C₁-C₄-alkylthio or N(C₁-C₄-alkyl)_(2;)

phenyl or naphthyl, which in each case can be mono- to trisubstituted by: halogen, C₁-C₄-alkyl, trifluoromethyl, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy, phenoxy, C₁-C4₄-alkylthio, dioxomethylene or dioxoethylene;

a five- or six-membered heteroaromatic, comprising one to three nitrogen atoms and/or a sulfur or oxygen atom, which can carry one to four halogen atoms and/or one to two of the following radicals: C₁-C₄-alkyl, trifluoromethyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio, phenyl, phenoxy, it being possible for the phenyl radicals in turn to carry one to five halogen atoms and/or one to three of the following radicals: C₁-C₄-alkyl, C₁-C₄-alkoxy or C₁-C₄-alkylthio;

C₃-C₈-cycloalkyl, it being possible for these radicals in each case to be mono- to trisubstituted by: halogen, C₁-C₄-alkyl, C₁-C₄-alkoxy, C₁-C₄-alkylthio;

R⁹ and R¹⁰ (which can be identical or different) are:

trifluoromethyl, trifluoromethoxy, hydrogen, C₁-C₄-alkoxy, C₁-C₄-alkylthio, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, C₁-C₄-alkyl, vinyl;

or CR⁹ or CR¹⁰ is linked to CR² as indicated under R² to give a 5- or 6-membered ring;

W is sulfur, oxygen or a single bond;

Q is oxygen or nitrogen; with the proviso that if Q=nitrogen then W is a single bond.

SYNTHEIS EXAMPLES

For the synthesis of 2-hydroxy-3-methoxy-3,3-diphenylpropionic acid and 2-hydroxy-3,3-diphenylbutyric acid see WO 96/11914 and DE 19614533.3.

Example 1

2-(6-Methylpyridazin-3-yloxy)-3-methoxy-3,3-diphenylpropionic acid (I-517)

1.3 g (4.8 mmol) of 2-hydroxy-3-methoxy-3,3-diphenylpropionic acid dissolved in DMF were added dropwise to a suspension of 0.43 g of NaH (14.3 mmol, 80% in white oil) in 10 ml of DMF. After stirring to room temperature for 30 minutes, the mixture was treated with 0.6 g (4.8 mmol) of 3-chloro-6-methylpyridazine in 10 ml of DMF and stirred overnight at room temperature. To complete the reaction, 0.6 g (4.8 mmol) of 3-chloro-6-methylpyridazine were then added again and the mixture was kept at 60° C. for 5 hours. It was poured onto ice water, extracted three times with ethyl acetate, the aqueous phase was brought to pH 2 with half-concentrated hydrochloric acid and the precipitate which was deposited was extracted with ethyl acetate. These ethyl acetate phases were dried with magnesium sulfate and then filtered and the solvent was stripped off under reduced pressure. 800 mg of the brown residue (1.19 g) were purified by means of MPLC, it being possible to isolate 199 mg of the desired product as a white solid.

¹H—NMR (200 MHz, DMSO): 7.5 ppm (1 H, d), 7.2-7.3 (10 H, m), 7.1 (1 H, d), 6.3 (1 H, s), 3.3 (3 H, s), 2.5 (3 H, S).

FAB-MS: 365 (M+H⁺)

Example 2

The following compounds were prepared similarly to Example 1:

2-(6-Methoxypyrazin-2-yloxy)-3-methoxy-3,3-diphenylpropionic acid (I-384)

¹H—NMR (200 MHz, DMSO): 7.9 ppm (1 H, s), 7.8 ppm (1 H, s), 7.2-7.3 (10 H, m), 6.1 (1 H, s), 3.9 (3 H, s), 3.3 (3 H, s).

FAB-MS: 380 (M+H⁺)

2-(6-Methoxypyridazin-3-yloxy)-3,3-diphenylbutyric acid

1H—NMR (200 MHz, DMSO): 12.3-12.6 ppm (broad, 1 H), 7.0-7.4 (12 H, m), 6.0 (1 H, s), 3.9 (3 H, s), 1.8 (3 H, s).

FAB-MS: 365 (M+H⁺)

The compounds listed in Table 1 can be prepared in a similar manner or as described in the general section.

TABLE I I

No. R¹ R³, R⁴ R⁵ X Y R² Z Q W I-1 COOH phenyl methyl N C-Me Me N O S I-2 COOH 4-Cl-phenyl methyl N C—OMe Me N O O I-3 COOH phenyl methyl CH N Me C-ethyl O — I-4 COOH phenyl methyl CH N Me C—SMe O — I-5 COOH 4-F-phenyl methyl N C-Me OMe N O O I-6 COOH 4-F-phenyl methyl N C-ethyl Me N O O I-7 COOH 4-Cl-phenyl methyl N C—OMe H N O O I-8 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C—CH₂—CH₂—CH₂ N O O I-9 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C-Me ethyl N O O I-10 COOH 4-Me-phenyl methyl N C—O—CH₂—O N O O I-11 COOMe phenyl methyl N C—O—CH₂—CH₂ N O O I-12 COOH phenyl methyl CH N Me C—OMe O — I-13 COOH phenyl methyl CH N OMe C-Me O — I-14 COOH cyclohexyl methyl CH CH Me N O O I-15 COOH phenyl propyl CH CH OMe N O O I-16 COOH phenyl 2-cyclopropyleth-1-yl CH C-Me Me N O O I-17 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C-Me Me N O O I-18 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C—OMe Me N O O I-19 COOH phenyl cyclohexyl-(CH₂)₂— CH C—OMe Me N O O I-20 COOH 4-F-phenyl methyl CH C—OMe OMe N O O I-21 COOH phenyl methyl CH N Me CH O — I-22 COOH phenyl methyl CH N Me C-Me O — I-23 COOH 4-F-phenyl methyl CH C-Me OMe N O O I-24 COOH phenyl methyl CH C-Ethyl Me N O S I-25 COOH phenyl methyl CH C—OMe H N O S I-26 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C—CH₂—OH O O I-27 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C—N(CH₃)₂ O O I-28 tetrazole phenyl methyl CH C—O—CH₂—O N O O I-29 COOH 4-Me-phenyl methyl CH C—O—CH₂—CH₂ N O O I-30 COOH phenyl methyl CH C—N(CH₃)₂ Me N O — I-31 COOH phenyl methyl CH C—NH(CH₃) OMe N O — I-32 COOH 4-F-phenyl methyl CH C—OMe CF₃ N O O I-33 COOH 4-Cl-phenyl methyl CH C-Me ethyl N O O I-34 COOH phenyl methyl CH C-ethyl CF₃ N O O I-35 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N CH₂—CH₂—O—C O O I-36 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N F C—OMe O O I-37 COOH phenyl propyl CH C—CH₂—OH Me N O O I-38 COOH cyclohexyl methyl CH C—N(CH₃)₂ Me N O O I-39 COOH phenyl methyl CH C-ethyl F N O — I-40 COOH phenyl methyl CH C—CH₂—OH Me N O — I-41 tetrazole phenyl methyl CH C—NH(CH₃) OMe N O O I-42 COOH phenyl cyclopentyl CH N Me CH O O I-43 COOH phenyl methyl CH N H C—OCF₃ O O I-44 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C-ethyl O O I-45 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N O—CH₂—CH₂—C O O I-46 COOH phenyl methyl CH N Me C-Me O S I-47 COOH phenyl methyl CH N Me C—OMe O S I-48 COOH phenyl methyl CH C-Me F N O — I-49 COOH phenyl methyl CH C—CH₂—CH₂—CH₂ N O — I-50 COOH 4-F-phenyl methyl CH N OMe C—OMe O O I-51 COOH 4-OMe-phenyl methyl CH N OMe C-Me O O I-52 COOH phenyl methyl CH N Me C-ethyl O S I-53 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C—OMe O O I-54 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N F C-Me O O I-55 COOH phenyl cyclopentyl-(CH₂)₂— CH N H C—OMe O O I-56 COOH phenyl methyl CH N CH₂—CH₂—S—C O O I-57 COOH phenyl methyl CH C—O—CH₂—O N O — I-58 COOH phenyl methyl CH C—O—CH₂—CH₂ N O — I-59 COOH 4-Br-phenyl methyl CH N CH₂—CH₂—CH₂—C O O I-60 COOMe phenyl methyl CH N O—CH₂—CH₂—C O O I-61 COOH 4-Me-phenyl methyl CH N CH₂—CH₂—O—C O O I-62 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—N(CH₃)₂ Me N O O I-63 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C-Me O O I-64 COOH 3-Cl-phenyl methyl CH N F C—OMe O O I-65 COOH phenyl 3,4-di-OMe-phenyl- CH N ethyl C-Me O O I-66 COOH phenyl methyl CH C-ethyl Me N O — I-67 COOH phenyl methyl CH C—OMe H N O — I-68 COOH phenyl 4-OMe-phenyl- CH N OMe C-ethyl O O I-69 COOH phenyl 4-Me-phenyl- CH N Me C—CH₂—OH O O I-70 COOH 4-F-phenyl methyl CH N Me C—N(CH₃)₂ O O I-71 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—O—CH₂—CH₂ N O O I-72 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—CH₂—OH Me N O O I-73 tetrazole phenyl methyl CH N OMe C—NH(CH₃) O O I-74 COOH phenyl 3,4-di-OMe-phenyl- N C-Me Me N O O I-75 COOH phenyl methyl CH C—OMe OMe N O — I-76 COOH phenyl methyl CH C—NH₂ OMe N O — I-77 COOH phenyl 3,4-di-OMe-phenyl- N C—OMe Me N O O I-78 COOH phenyl 4-OMe-phenyl- N C—CH₂—CH₂—CH₂ N O O I-79 COOH phenyl cyclopentyl-(CH₂)₂— N C-Me OMe N O O I-80 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—OMe Me N O O I-81 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—CH₂—CH₂—CH₂ N O O I-82 COOH phenyl cyclohexyl-(CH₂)₂— N C—O—CH₂—O N O O I-83 COOH 4-F-phenyl ethyl CH C—NH(CH₃) Me N O O I-84 COOH phenyl methyl CH C-Me Me N O — I-85 COOH phenyl methyl CH C—OMe Me N O — I-86 COOH cyclohexyl propyl CH C-Me Me N O O I-87 COOH 4-Cl-phenyl i-propyl CH C—OMe Me N O O I-88 COOH 4-F-phenyl ethyl CH C—OMe NH₂ N O O I-89 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—NH(CH₃) Me N O O I-90 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C-Me Me N O O I-91 COOH phenyl ethyl CH C-ethyl ethyl N O S I-92 COOH phenyl ethyl CH C—CH₂—CH₂—CH₂ N O S I-93 COOH phenyl methyl CH CH Me N O — I-94 COOH phenyl methyl CH C—N(CH₃)₂ Me N O — I-95 COOH phenyl ethyl CH C—O—CH₂—CH₂ N O S I-96 COOH phenyl ethyl CH C-Me F N O S I-97 COOH 4-Me-phenyl ethyl CH C—CH₂—OH Me N O O I-98 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C-Me OMe N O O I-99 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C—O—CH₂—O N O O I-100 COOH 4-OCF₃-phenyl ethyl CH C—N(CH₃)₂ Me N O O I-101 COOH phenyl propyl CH N Me CH O O I-102 COOH phenyl methyl N C—O—CH₂—O N O — I-103 COOH phenyl methyl N C—O—CH₂—CH₂ N O — I-104 COOEt phenyl ethyl CH N OMe CH O O I-105 COOH 4-Et-phenyl ethyl CH N Me C-Me O O I-106 COOH phenyl 4-i-propyl-phenyl- CH N Me C—OMe O O I-107 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C—OMe Me N O O I-108 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C—CH₂—CH₂—CH₂ N O O I-109 COOH phenyl 4-i-propyl-phenyl-(CH₂)₂— CH N ethyl C-Me O O I-110 COOH phenyl 3,4-di-Me-phenyl-(CH₂)₂— CH N Me C-ethyl O O I-111 COOH phenyl methyl N C-ethyl Me N O — I-112 COOH phenyl methyl N C—OMe H N O — I-113 COOH phenyl 3,4-di-Me-phenyl-(CH₂)₂— CH N O—CH₂—CH₂—C O O I-114 COOH phenyl 4-SMe-phenyl-(CH₂)₂— CH N CH₂—CH₂—O—C O O I-115 COOH 4-F-phenyl ethyl CH N F C—OMe O O I-116 COOH phenyl HO—CH₂—CH₂— CH N OMe C-ethyl O O I-117 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C-Me Me N O O I-118 COOH phenyl 3-hexen-1-yl CH N OMe C-ethyl O O I-119 COOH phenyl 3-hepten-1-yl CH N Me C—CH₂—OH O O I-120 COOH phenyl methyl N C—OMe Me N O — I-121 COOH phenyl methyl N C—CH₂—CH₂—CH₂ N O — I-122 COOH 4-Cl-phenyl ethyl CH N Me C—N(CH₃)₂ O O I-123 COOH phenyl HO—CH₂—(CH—OH)—CH₂— N C-Me Me N O O I-124 COOH phenyl HO—CH₂—(CH—OH)—CH₂— N C—OMe Me N O O I-125 COOH phenyl HO—CH₂—CH₂— CH N CH₂—CH₂—CH₂—C O O I-126 COOH phenyl HO—CH₂—CH₂— CH N F C—OMe O O I-127 COOH phenyl HO—CH₂—(CH—OH)—CH₂— N C—CH₂—CH₂—CH₂ N O O I-128 COOH phenyl phenyl-O—(CH₂)₂— CH C-Me Me N O O I-129 COOH phenyl ethyl CH N Me C—N(CH₃)₂ N — I-130 COOH phenyl methyl N C-Me Me N O — I-131 COOH phenyl 4-OMe-phenyl-O—(CH₂)₂— CH C—OMe Me N O O I-132 COOH 4-F-phenyl HO—CH₂—CH₂— CH C-Ethyl ethyl N O O I-133 COOH phenyl HO—CH₂—CH₂— CH C—CH₂—CH₂—S N O O I-134 COOH phenyl HO—CH₂—CH₂— CH N ethyl C-Me O O I-135 COOH phenyl HO—CH₂—CH₂— CH N Me C-ethyl O O I-136 COOMe phenyl HO—CH₂—CH₂— CH C—O—CH₂—CH₂ N O O I-137 COOH 4-F-phenyl HO—CH₂—CH₂— CH C-Me F N O O I-138 COOH phenyl ethyl CH N O—CH₂—O—C N — I-139 COOH phenyl ethyl CH N CH₂—CH₂—CH₂—C N — I-140 COOH 4-F-phenyl HO—CH₂—CH₂— CH C—CH₂—OH Me N O O I-141 COOH phenyl HO—CH₂—CH₂—CH₂— CH N Me C-Me O O I-142 COOH phenyl HO—CH₂—CH₂—CH₂— CH N Me C—OMe O O I-143 COOH phenyl HO—CH₂—CH₂— CH N Me C-Me O O I-144 COOH phenyl HO—CH₂—CH₂— CH N Me C—OMe O O I-145 COOH 4-Br-phenyl HO—CH₂—CH₂— CH N ethyl C-Me O O I-146 COOH 4-Me-phenyl HO—CH₂—CH₂— CH N Me C-ethyl O O I-147 COOH phenyl ethyl CH N OMe C-Me N — I-148 COOH phenyl ethyl CH N Me C-ethyl N — I-149 COOH 2-Me-phenyl HO—CH₂—CH₂— CH N CH₂—CH₂—CH₂—C O O I-150 COOH 2-Me-phenyl HO—CH₂—CH₂—CH₂— CH N F C—OMe O O I-151 COOH phenyl HO—CH₂—(CH—OH)—CH₂— CH N OMe C-ethyl O O I-152 COOH phenyl HO—CH₂—CH₂— CH C-Me F N O O I-153 COOH phenyl HO—CH₂—CH₂— CH C—CH₂—OH Me N O O I-154 COOH phenyl 3,4,5-tri-OMe-phenyl-(CH₂)₂— N C-Me Me N O O I-155 COOH phenyl 3,4,5-tri-OMe-phenyl-(CH₂)₂— N C—OMe Me N O O I-156 COOH phenyl ethyl CH N Me C-Me N — I-157 COOH phenyl ethyl CH N Me C—OMe N — I-158 COOH phenyl 3,4-di-Cl-phenyl-(CH₂)₂— N C—CH₂—CH₂—CH₂ N O O I-159 COOH phenyl 4-Cl-phenyl-(CH₂)₂— N C-Me OMe N O O I-160 COOH phenyl 3,4-di-Cl-phenyl-(CH₂)₂— N C—O—CH₂—O N O O I-161 COOH phenyl HO—CH₂—CH₂— CH C—CH₂—CH₂—CH₂ N O O I-162 COOH phenyl HO—CH₂—CH₂— CH C—O—CH₂—CH₂ N O O I-163 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH C—NH(CH₃) Me N O O I-164 COOH 4-F-phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C-Me Me N O O I-165 COOH phenyl ethyl CH C-Me ethyl N N — I-166 COOH phenyl ethyl CH C-ethyl OMe N N — I-167 COOH phenyl 3,4,5-tri-OMe-phenyl-(CH₂)₂— CH C—OMe Me N O O I-168 COOH 4-Cl-phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH C—CH₂—CH₂—CH₂ N O O I-169 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH C—O—CH₂—CH₂ N O O I-170 COOH phenyl HO—CH₂—CH₂— CH C—OMe Me N O O I-171 COOH phenyl HO—CH₂—CH₂— CH C-ethyl ethyl N O O I-172 COOH phenyl 4-Br-phenyl-(CH₂)₂— CH C—CH₂—OH Me N O O I-173 COOH phenyl 3,4-di-Me-phenyl-(CH₂)₂— CH C—N(CH₃)₂ Me N O O I-174 COOH phenyl ethyl CH C—CH₂—CH₂—CH₂ N N — I-175 COOH phenyl ethyl CH C—O—CH₂—CH₂ N N — I-176 COOH phenyl 3,4-di-Me-phenyl-(CH₂)₂— CH N Me C-Me O O I-177 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C—OMe O S I-178 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N F C-Me O S I-179 COOH phenyl HO—CH₂—CH₂— N C—CH₂—CH₂—CH₂ N O O I-180 COOH phenyl HO—CH₂—CH₂— CH C-Me Me N O O I-181 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C-ethyl O S I-182 COOH 4-F-phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N O—CH₂—CH₂—C O O I-183 COOH phenyl ethyl CH C-Me Me N N — I-184 COOH phenyl ethyl CH C—OMe Me N N — I-185 COOH 4-F-phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N CH₂—CH₂—O—C O O I-186 COOH phenyl 3,4-di-Cl-phenyl-(CH₂)₂— CH N F C—OMe O O I-187 COOH phenyl 4-Cl-phenyl-(CH₂)₂— CH N Me C—CH₂—OH O O I-188 COOH phenyl HO—CH₂—CH₂— N C-Me Me N O O I-189 COOH phenyl HO—CH₂—CH₂— N C—OMe Me N O O I-190 COOH 4-Cl-phenyl 3,4-di-OMe-phenyl-(CH₂)₂— CH N Me C—N(CH₃)₂ O O I-191 COOH Phenyl 4-i-propyl-phenyl-(CH₂)₂— N C-Me Me N O O I-192 COOH phenyl ethyl N C-ethyl Me N N — I-193 COOH phenyl ethyl N C—O—CH₂—CH₂ N N — I-194 COOH phenyl 4-i-propyl-phenyl-(CH₂)₂— N C—OMe Me N O O I-195 COOH phenyl 4-ethyl-phenyl-(CH₂)₂— N C—CH₂—CH₂—CH₂ N O O I-196 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C-Me ethyl N O S I-197 COOH phenyl ethyl CH N Me C—CH₂—OH O O I-198 COOH phenyl ethyl CH N Me C—N(CH₃)₂ O O I-199 COOH phenyl 4-ethyl-phenyl-(CH₂)₂— N C—O—CH₂—O N O O I-200 COOH 4-F-phenyl 4-OMe-phenyl-(CH₂)₂— CH C—NH(CH₃) Me N O O I-201 COOH phenyl ethyl N C-Me Me N N — I-202 COOH phenyl ethyl N C—OMe Me N N — I-203 COOH phenyl 4-Br-phenyl-(CH₂)₂— CH C-Me Me N O O I-204 COOH phenyl 4-i-propyl-phenyl-(CH₂)₂— CH C—OMe Me N O O I-205 COOH phenyl 4-ethyl-phenyl-(CH₂)₂— CH C—CH₂—CH₂—CH₂ N O S I-206 COOH phenyl ethyl CH N F C—OMe O O I-207 COOH phenyl ethyl CH N OMe C-ethyl O O I-208 COOH 4-Cl-phenyl 4-OMe-phenyl-(CH₂)₂— CH C—O—CH₂—CH₂ N O O I-209 COOH 4-Me-phenyl 4-OMe-phenyl-(CH₂)₂— CH C—CH₂—OH Me N O O I-210 COOH phenyl methyl CH N OMe C-ethyl N — I-211 COOH phenyl methyl CH N Me C—N(CH₃)₂ N — I-212 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—N(CH₃)₂ Me N O S I-213 COOH phenyl 4-propyl-phenyl-(CH₂)₂— CH N Me C-Me O O I-214 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH N Me C—OMe O O I-215 COOH phenyl ethyl CH N O—CH₂—CH₂—C O O I-216 COOH phenyl ethyl CH N CH₂—CH₂—O—C O O I-217 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH N F C-Me O O I-218 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH N Me C-ethyl O O I-219 COOH phenyl methyl CH N O—CH₂—CH₂—C N — I-220 COOH phenyl methyl CH N CH₂—CH₂—O—C N — I-221 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH N CH₂—CH₂—CH₂—C O O I-222 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH N O—CH₂—CH₂—C O O I-223 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N F C—OMe O S I-224 COOH phenyl ethyl CH N ethyl C-Me O O I-225 COOH phenyl ethyl CH N Me C-ethyl O O I-226 COOH phenyl 4-propyl-phenyl-(CH₂)₂— CH N Me C—CH₂—OH O O I-227 COOH phenyl 4-N(CH₃)₂-phenyl-(CH₂)₂— CH N Me C—N(CH₃)₂ O O I-228 COOH phenyl methyl CH N O—CH₂—O—C N — I-229 COOH phenyl methyl CH N CH₂—CH₂—CH₂—C N — I-230 COOH phenyl 4-Cl-phenyl-CH₂— N C-Me Me N O O I-231 COOH phenyl 4-Me-phenyl-CH₂— N C—OMe Me N O O I-232 COOH phenyl 3,4-di-Me-phenyl-CH₂— N C—CH₂—CH₂—CH₂ N O O I-233 COOH phenyl ethyl CH N Me C-Me O O I-234 COOH phenyl ethyl CH N Me C—OMe O O I-235 COOH phenyl 4-OMe-phenyl-CH₂— N C-Me ethyl N O S I-236 COOH 4-F-Phenyl 4-OMe-phenyl-CH₂— N C—O—CH₂—O N O O I-237 COOH phenyl methyl CH N OMe C-Me N — I-238 COOH phenyl methyl CH N Me C-ethyl N — I-239 COOH 4-F-phenyl 4-OMe-phenyl-CH₂— CH Cl Me N O O I-240 COOH phenyl 4-OMe-phenyl-CH₂— CH C-Me Me N O S I-241 COOH phenyl 4-OMe-phenyl-CH₂— CH C—OMe Me N O S I-242 COOH phenyl ethyl CH N Me CH O O I-243 COOH phenyl ethyl CH N OMe CH O O I-244 COOH phenyl 4-Cl-phenyl-CH₂— CH C—CH₂—CH₂—CH₂ N O O I-245 COOH phenyl 4-Cl-phenyl-CH₂— CH C—O—CH₂—CH₂ N O O I-246 COOH phenyl methyl CH N Me C-Me N — I-247 COOH phenyl methyl CH N Me C—OMe N — I-248 COOH 4-Cl-phenyl 4-OMe-phenyl-CH₂— CH C—CH₂—OH Me N O O I-249 COOH phenyl HO—CH₂— CH N Me C—N(CH₃)₂ O — I-250 COOH 4-Cl-phenyl 4-OMe-phenyl-CH₂— CH C—N(CH₃)₂ Me N O O I-251 COOH phenyl 4-OMe-phenyl-CH₂— CH N CF₃ C-Me O O I-252 COOH phenyl ethyl CH C—CH₂—OH Me N O O I-253 COOH phenyl ethyl CH C—N(CH₃)₂ Me N O O I-254 COOH phenyl 4-OMe-phenyl-CH₂— CH N CF₃ C—OMe O O I-255 COOH phenyl 4-Br-phenyl-CH₂— CH N F C-Me O O I-256 COOH phenyl methyl CH C-Ethyl OMe N N — I-257 COOH phenyl methyl CH C—N(CH₃)₂ Me N N — I-258 COOH phenyl 4-i-propyl-phenyl-CH₂— CH N Me C-ethyl O O I-259 COOH phenyl HO—CH₂— CH N CH₂—CH₂—CH₂—C O — I-260 COOH phenyl HO—CH₂— CH N OMe C-ethyl O — I-261 COOH phenyl 4-ethyl-phenyl-CH₂— CH N CH₂—CH₂—CH₂—C O O I-262 COOH phenyl 4-i-propyl-phenyl-CH₂— CH N O—CH₂—CH₂—C O O I-263 COOH phenyl ethyl CH C—O—CH₂—CH₂ N O O I-264 COOH phenyl ethyl CH C-Me F N O O I-265 COOH phenyl 4-phenyl-phenyl-CH₂— CH N F C—OMe O O I-266 COOH 4-F-phenyl 4-OMe-phenyl-CH₂— CH N Me C—CH₂—OH O O I-267 COOH phenyl methyl CH C—OMe F N N — I-268 COOH phenyl methyl CH C-Me ethyl N N — I-269 COOH 4-F-phenyl 4-OMe-phenyl-CH₂— CH N Me C—N(CH₃)₂ O O I-270 COOH phenyl HO—CH₂— CH N Me C-ethyl O — I-271 COOH phenyl HO—CH₂— CH N O—CH₂—O—C O — I-272 COOH phenyl methyl N C-Me CF₃ N N — I-273 COOH 4-OMe-phenyl methyl N C—OMe Me N N — I-274 COOH phenyl ethyl CH C-ethyl ethyl N O O I-275 COOH phenyl ethyl CH C—CH₂—CH₂—CH₂ N O O I-276 COOH 4-Me-phenyl methyl N C-Me OMe N N — I-277 COOH 4-OMe-phenyl methyl N C-ethyl Me N N — I-278 COOH phenyl methyl CH C—O—CH₂—O N N — I-279 COOH phenyl methyl CH C—O—CH₂—CH₂ N N — I-280 COOH phenyl 4-OMe-phenyl-CH₂— N C—O—CH₂—O N N — I-281 COOH phenyl HO—CH₂— CH N Me C—OMe O — I-282 COOH phenyl HO—CH₂— CH N OMe C-Me O — I-283 COOH phenyl 4-OMe-phenyl-CH₂— N C—O—CH₂—CH₂ N N — I-284 COOH phenyl phenyl-O—CH₂— CH C-Me Me N N — I-285 COOH phenyl ethyl CH C—OMe Me N O O I-286 COOH phenyl ethyl CH C—OMe NH₂ N O O I-287 COOH phenyl 3,4-di-OMe-phenyl-CH₂— CH C—OMe Me N N — I-288 COOH phenyl 3,4-di-OMe-phenyl-CH₂— CH C-Me OMe N N — I-289 COOH phenyl methyl CH C-Me OMe N N — I-290 COOH phenyl methyl CH C-ethyl Me N N — I-291 COOH phenyl phenyl-CH₂—O—CH₂— CH C-ethyl Me N N — I-292 COOH phenyl HO—CH₂— CH C—CH₂—CH₂—CH₂ N O — I-293 COOH phenyl HO—CH₂— CH N Me C-Me O — I-294 COOH phenyl HO—CH₂— CH C—O—CH₂—O N N — I-295 COOH phenyl HO—CH₂— CH C—O—CH₂—CH₂ N N — I-296 COOH phenyl ethyl CH C—NH(CH₃) Me N O O I-297 COOH phenyl ethyl CH C-Me Me N O O I-298 COOH phenyl methyl CH C—OMe CF₃ N N — I-299 COOH phenyl 3,4-di-Me-phenyl-CH₂— CH C-Me ethyl N N — I-300 COOH phenyl methyl CH C-Me Me N N — I-301 COOH phenyl methyl CH C—OMe Me N N — I-302 COOH 4-Me-phenyl methyl CH C-ethyl OMe N N — I-303 COOH phenyl HO—CH₂— CH C—OMe H N O — I-304 COOH phenyl HO—CH₂— CH C—O—CH₂—CH₂ N O — I-305 COOH 4-OMe-phenyl methyl CH C—N(CH₃)₂ Me N N — I-306 COOH phenyl methyl CH N CF₃ C-Me N — I-307 COOH phenyl ethyl N C-Me OMe N O O I-308 COOH phenyl ethyl N C—O—CH₂—O N O O I-309 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C—OMe N — I-310 COOH phenyl HO—CH₂— CH N OMe C-Me N — I-311 COOH phenyl methyl N C—O—CH₂—O N N — I-312 COOH phenyl methyl N C—O—CH₂—CH₂ N N — I-313 COOH phenyl 4-Me-phenyl-CH₂— CH N Me C-ethyl N — I-314 COOH phenyl HO—CH₂— CH C—OMe Me N O — I-315 COOH phenyl HO—CH₂— CH C-ethyl Me N O — I-316 COOH phenyl 4-Me-phenyl-CH₂— CH N O—CH₂—O—C N — I-317 COOMe phenyl methyl CH N CH₂—CH₂—CH₂—C N — I-318 COOH phenyl ethyl N C—OMe Me N O O I-319 COOH phenyl ethyl N C—CH₂—CH₂—CH₂ N O O I-320 COOH 4-OMe-phenyl methyl CH N O—CH₂—CH₂—C N — I-321 COOH 4-Me-phenyl methyl CH N CH₂—CH₂—O—C N — I-322 COOH phenyl methyl N C-Me OMe N N — I-323 COOH phenyl methyl N C-ethyl Me N N — I-324 COOH phenyl 4-OMe-phenyl-CH₂— CH N OMe C-ethyl N — I-325 COOH phenyl HO—CH₂— N C-ethyl Me N O — I-326 COOH phenyl HO—CH₂— CH C-Me Me N O — I-327 COOH phenyl 3,4-di-OMe-phenyl-CH₂— CH N Me C—N(CH₃)₂ N — I-328 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C-Me Me N N — I-329 COOH phenyl methyl CH N OMe C—NH(CH₃) O O I-330 COOH phenyl ethyl N C-Me Me N O O I-331 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C—OMe Me N N — I-332 COOH phenyl ethyl N C-ethyl CF₃ N N — I-333 COOH phenyl methyl N C-Me Me N N — I-334 COOH phenyl methyl N C—OMe Me N N — I-335 COOH phenyl HO—CH₂—CH₂— N C—O—CH₂—CH₂ N N — I-336 COOH phenyl HO—CH₂— N C—OMe Me N O — I-337 COOH phenyl HO—CH₂— N C—CH₂—CH₂—CH₂ N O — I-338 COOH phenyl HO—CH₂—CH₂— CH C-Me Me N N — I-339 COOH phenyl phenyl-CH₂—O—(CH₂)₂— CH C—OMe Me N N — I-340 COOH phenyl methyl CH N Me C—CH₂—OH O O I-341 COOH phenyl methyl CH N Me C—N(CH₃)₂ O O I-342 COOH phenyl phenyl-O—(CH₂)₂— CH C—CH₂—CH₂—CH₂ N N — I-343 COOH phenyl 3,4-di-OMe-phenyl-O—(CH₂)₂ CH C—O—CH₂—CH₂ N N — I-344 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C—CH₂—OH O O I-345 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C—N(CH₃)₂ O O I-346 COOH phenyl 3,4-di-OMe-phenyl-O—(CH₂)₂— CH C-Me ethyl N N — I-347 COOH phenyl ethyl CH N OMe C—NH(CH₃) O — I-348 COOH phenyl HO—CH₂— N C-Me Me N O — I-349 COOH phenyl HO—CH₂—CH₂— CH C-ethyl OMe N N — I-350 COOH phenyl propyl CH N Me C-Me N — I-351 COOH phenyl methyl CH N Ethyl C-Me O O I-352 COOH phenyl methyl CH N OMe C-ethyl O O I-353 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH N Me C—OMe N — I-354 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH N OMe C-Me N — I-355 COOH phenyl 4-OMe-phenyl-CH₂— CH N O—CH₂—CH₂—C O O I-356 COOH phenyl 4-OMe-phenyl-CH₂— CH N F C—OMe O O I-357 COOH phenyl n-butyl CH N Me C-ethyl N — I-358 COOH phenyl ethyl CH N Me C—CH₂—OH O — I-359 COOH phenyl ethyl CH N Me C—N(CH₃)₂ O — I-360 COOH phenyl n-hexyl CH N O—CH₂—O—C N — I-361 COOH 4-Me-phenyl ethyl CH N CH₂—CH₂—CH₂—C N — I-362 COOH phenyl methyl CH N CH₂—CH₂—O—C O O I-363 COOH phenyl methyl CH N F C—OMe O O I-364 COOH phenyl ethyl CH N CF₃ C—N(CH₃)₂ N — I-365 COOH phenyl 4-OMe-phenyl-CH₂— N C-Me Me N O — I-366 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C-ethyl O O I-367 COOH phenyl 4-OMe-phenyl-CH₂— CH N CH₂—CH₂—CH₂—C O O I-368 COOH phenyl 3,4-di-Me-phenyl-CH₂— N C—OMe Me N O — I-369 COOH phenyl ethyl CH N CH₂—CH₂—CH₂—C O — I-370 COOH phenyl ethyl CH N OMe C-ethyl O — I-371 COOH phenyl 4-Me-phenyl-CH₂— N C—CH₂—CH₂—CH₂ N O — I-372 COOH 4-OMe-phenyl methyl N C-ethyl Me N O — I-373 COOH phenyl methyl CH N CH₂—CH₂—CH₂—C O O I-374 COOH phenyl methyl CH N O—CH₂—CH₂—C O O I-375 COOH 4-OMe-phenyl methyl N C—OMe H N O — I-376 COOH phenyl 4-i-propyl-phenyl-CH₂— N C—O—CH₂—O N O — I-377 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C—OMe O O I-378 COOH phenyl 4-OMe-phenyl-CH₂— CH N F C-Me O O I-379 COOH phenyl 3,4,5-tri-OMe-phenyl-CH₂— N C—O—CH₂—CH₂ N O — I-380 COOH phenyl ethyl CH N Me C-ethyl O — I-381 COOH phenyl ethyl CH N O—CH₂—O—C O — I-382 COOH 4-OMe-phenyl methyl CH CH Me N O — I-383 COOH phenyl 3,4,5-tri-OMe-phenyl-CH₂— CH C—N(CH₃)₂ Me N O — I-384 COOH phenyl methyl CH N H C—OMe O O I-385 COOH phenyl methyl CH N O—CH₂—O—C O O I-386 COOH cyclohexyl methyl CH C-Me Me N O — I-387 COOH phenyl 4-Me-phenyl-CH₂— CH C—OMe Me N O — I-388 COOH phenyl 4-OMe-phenyl-CH₂— CH C—N(CH₃)₂ Me N O O I-389 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C-Me O O I-390 COOH phenyl 2-OMe-phenyl-CH₂— CH C—OMe OMe N O — I-391 COOH phenyl ethyl CH N Me C—OMe O — I-392 COOH phenyl ethyl CH N OMe C-Me O — I-393 COOH phenyl 4-Cl-phenyl-CH₂— CH C—NH₂ OMe N O — I-394 COOH phenyl methyl CH C-ethyl CF₃ N O — I-395 COOH phenyl methyl CH N OMe C-Me O O I-396 COOH phenyl methyl CH N Me C-ethyl O O I-397 COOH 4-OMe-phenyl methyl CH C—OMe H N O — I-398 COOH phenyl 3,4-di-Cl-phenyl-CH₂— CH C—O—CH₂—O N O — I-399 COOH phenyl 4-OMe-phenyl-CH₂— CH C—O—CH₂—CH₂ N O O I-400 COOH phenyl 4-OMe-phenyl-CH₂— CH C—CH₂—OH Me N O O I-401 COOH phenyl cyclopentyl-CH₂— CH C—O—CH₂—CH₂ N O — I-402 COOH phenyl ethyl CH C—N(CH₃)₂ Me N O — I-403 COOH phenyl ethyl CH N Me C-Me O — I-404 COOH 4-OMe-phenyl methyl CH C-Me F N O — I-405 COOH phenyl 4-F-phenyl-CH₂— CH C—CH₂—CH₂—CH₂ N O — I-406 COOH phenyl methyl CH N Me C—OMe O O I-407 COOH phenyl methyl CH N OMe C—OMe O O I-408 COOH phenyl 4-Cl-phenyl-CH₂— CH C-ethyl F N O — I-409 COOMe phenyl methyl CH C—CH₂—OH Me N O — I-410 COOH phenyl 4-OMe-phenyl-CH₂— CH C—OMe Me N O O I-411 COOH phenyl 4-OMe-phenyl-CH₂— CH C—CH₂—CH₂—CH₂ N O O I-412 COOH phenyl phenyl-O—CH₂— CH C—N(CH₃)₂ Me N O — I-413 COOH phenyl ethyl CH C—CH₂—CH₂—CH₂ N O — I-414 COOH phenyl ethyl CH C—CH₂—OH Me N O — I-415 COOH phenyl 4-Br-phenyl-CH₂— CH C—NH(CH₃) OMe N O — I-416 COOH 4-OMe-phenyl methyl CH N Me CH O — I-417 COOH phenyl methyl CH N OMe CH O O I-418 COOH phenyl methyl CH N Me C-Me O I-419 COOH phenyl methyl CH N CF₃ C-Me O — I-420 COOH phenyl 4-OMe-phenyl-CH₂— CH N Me C—OMe O — I-421 COOH phenyl 4-OMe-phenyl-CH₂— CH C—NH(CH₃) Me N O O I-422 COOH phenyl 4-OMe-phenyl-CH₂— CH C-Me Me N O O I-423 COOH phenyl 3,4-dioxomethylenephenyl-CH₂— CH N OMe C-Me O — I-424 COOH phenyl ethyl CH C—O—CH₂—CH₂ N O — I-425 COOH phenyl ethyl CH C-Me F N O — I-426 COOH phenyl 3-Cl-phenyl-CH₂— CH N Me C-ethyl O — I-427 COOH phenyl methyl CH N Me C—OCF₃ O — I-428 COOH phenyl methyl CH C—NH(CH₃) OMe N O O I-429 COOH phenyl methyl CH N Me CH O O I-430 COOH 4-OMe-phenyl methyl CH N O—CH₂—O—C O — I-431 COOH 4-Me-phenyl methyl CH N CH₂—CH₂—CH₂—C O — I-432 COOH phenyl 4-OMe-phenyl-CH₂— N C-Me ethyl N O O I-433 COOH phenyl 4-OMe-phenyl-CH₂— N C—O—CH₂—O N O O I-434 COOH phenyl 2-Cl-phenyl-CH₂— CH N O—CH₂—CH₂—C O — I-435 COOH phenyl ethyl CH C-ethyl Me N O — I-436 COOH phenyl ethyl CH C—OMe H N O — I-437 COOH phenyl 3-OMe-phenyl-CH₂— CH N CH₂—CH₂—O—C O — I-438 COOH phenyl 3,5-di-OMe-phenyl-CH₂— CH N F C—OMe O — I-439 COOH phenyl methyl CH C—CH₂—OH Me N O O I-440 COOH phenyl methyl CH C—N(CH₃)₂ Me N O O I-441 COOH 4-OMe-phenyl methyl CH N Me C—NH(CH₃) O — I-442 COOH phenyl 2-Br-phenyl-CH₂— CH N OMe C-ethyl O — I-443 COOH phenyl 4-OMe-phenyl-CH₂— N C—OMe Me N O O I-444 COOH phenyl 4-OMe-phenyl-CH₂— N C—CH₂—CH₂—CH₂ N O O I-445 COOH phenyl 2-Cl-phenyl-CH₂— CH N Me C—CH₂—OH O — I-446 COOH phenyl ethyl CH C-OMe Me N O — I-447 COOH phenyl ethyl CH C—NH₂ OMe N O — I-448 COOH phenyl 4-i-propyl-phenyl-CH₂— CH N Me C—N(CH₃)₂ O — I-449 COOH 4-OMe-phenyl methyl CH N OMe C—NH(CH₃) O — I-450 COOH phenyl methyl CH C-Me ethyl N O O I-451 COOH phenyl methyl CH C-ethyl OMe N O O I-452 tetrazole phenyl ethyl N C-Me Me N O — I-453 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₂— N C—OMe Me N O — I-454 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N Me C—N(CH₃)₂ O O I-455 COOH phenyl 4-OMe-phenyl-CH₂— N C-Me Me N O O I-456 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— N C—CH₂—CH₂—CH₂ N O — I-457 COOH phenyl ethyl CH C—N(CH₃)₂ Me N O — I-458 COOH phenyl ethyl CH C-Me Me N O — I-459 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— N C-ethyl Me N O — I-460 COOH phenyl 4-OMe-phenyl-(CH₂)₃— CH C—N(CH₃)₂ Me N O — I-461 COOH phenyl methyl CH C—O—CH₂—CH₂ N O O I-462 COOH phenyl methyl CH C—OMe F N O O I-463 COOH phenyl 3-Cl-phenyl-(CH₂)₂— CH C-Me Me N O — I-464 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH C—OMe Me N O — I-465 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N F C—OMe O O I-466 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N Me C—CH₂—OH O O I-467 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH C—NH₂ OMe N O — I-468 COOH phenyl ethyl N C—CH₂—CH₂—CH₂ N O — I-469 COOH phenyl ethyl N C-ethyl Me N O — I-470 COOH phenyl 4-Me-phenyl-(CH₂)₃— CH C-ethyl Me N O — I-471 COOH phenyl 4-OH-phenyl-(CH₂)₃— CH C—OMe H N O — I-472 COOH phenyl methyl CH C—OMe H N O O I-473 COOH phenyl methyl CH C—O—CH₂—O N O O I-474 COOH phenyl 4-OH-phenyl-(CH₂)₂— CH C—O—CH₂—CH₂ N O — I-475 COOH phenyl 3,4-dioxomethylenephenyl-(CH₂)₂— CH C-Me F N O — I-476 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N CH₂—CH₂—CH₂—C O O I-477 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N O—CH₂—CH₂—C O O I-478 COOH phenyl 4-Me-phenyl-(CH₂)₂— CH C—CH₂—CH₂—CH₂ N O — I-479 COOH phenyl ethyl N C-Me Me N O — I-480 COOH phenyl ethyl N C—OMe Me N O — I-481 COOH phenyl 2-Cl-phenyl-(CH₂)₂— CH C—CH₂—OH Me N O — I-482 COOH phenyl 3,5-di-OMe-phenyl-(CH₂)₂— CH C—N(CH₃)₂ Me N O — I-483 COOH phenyl methyl CH C-Me OMe N O O I-484 COOH phenyl methyl CH C-ethyl Me N O O I-485 COOH phenyl HO—CH₂—CH₂— CH N Me C-Me O — I-486 COOH phenyl HO—CH₂—CH₂— CH N Me C—OMe O — I-487 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N F C-Me O O I-488 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N Me C-ethyl O O I-489 COOH phenyl HO—CH₂—CH₂— CH N OMe C-Me O — I-490 COOH phenyl methyl CH N Me C—N(CH₃)₂ O — I-491 COOH phenyl methyl CH N OMe C—NH(CH₃) O — I-492 COOH phenyl ethyl CH N CF₃ C-ethyl O — I-493 COOH 4-OMe-phenyl ethyl CH N O—CH₂—O—C O — I-494 COOH phenyl methyl CH C—OMe Me N O O I-495 COOH phenyl methyl CH C—OMe OMe N O O I-496 COOH phenyl 4-Br-phenyl-(CH₂)₂— CH N C—CH₂—CH₂—CH₂ O — I-497 COOH phenyl 4-OH-phenyl-(CH₂)₂— CH N OMe C-ethyl O — I-498 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N Me C-Me O O I-499 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH N Me C—OMe O O I-500 COOH phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH N Me C—CH₂—OH O — I-501 COOH phenyl methyl CH N OMe C-ethyl O — I-502 COOH phenyl methyl CH N Me C—CH₂—OH O — I-503 COOHI phenyl 3,4-di-OMe-phenyl-(CH₂)₃— CH N Me C—N(CH₃)₂ O — I-504 COOH phenyl propyl CH N OMe C—NH(CH₃) O — I-505 COOH phenyl methyl CH CH OMe N O O I-506 COOH phenyl methyl CH C-Me Me N O O I-507 COOH phenyl HO—CH₂—CH₂— N C-Me Me N O — I-508 COOH phenyl HO—CH₂—CH₂— N C—OMe Me N O — I-509 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—CH₂—OH Me N O O I-510 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—N(CH₃)₂ Me N O O I-511 COOH 4-OMe-phenyl HO—CH₂— N C—CH₂—CH₂—CH₂ N O — I-512 COOH phenyl methyl CH N F C—OMe O — I-513 COOH phenyl methyl CH N Me C—NH(CH₃) O — I-514 COOH phenyl HO—CH₂— N C-ethyl CF₃ N O — I-515 COOH phenyl propyl CH C-Me Me N O — I-516 COOH phenyl methyl N C—O—CH₂—CH₂ N O O I-517 COOH phenyl methyl CH CH Me N O O I-518 COOH phenyl butyl CH C—OMe Me N O — I-519 COOH phenyl i-butyl CH C-ethyl Me N O — I-520 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—CH₂—CH₂—CH₂ N O O I-521 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—O—CH₂—CH₂ N O O I-522 COOH phenyl propyl CH C—OMe H N O — I-523 COOH phenyl methyl CH N O—CH₂—CH₂—C O — I-524 COOH phenyl methyl CH N CH₂—CH₂—O—C O — I-525 COOH phenyl HO—CH₂—CH₂— CH C—O—CH₂—CH₂ N O — I-526 COOH phenyl 4-OMe-phenyl-CH₂—O—CH₂— CH C—CH₂—CH₂—CH₂ N O — I-527 COOH phenyl methyl N C—OMe H N O O I-528 COOH phenyl methyl N C—O—CH₂—O N O O I-529 COOH phenyl 4-OMe-phenyl-CH₂—O—CH₂— CH N Me C-Me O — I-530 COOH phenyl 3,4-di-OMe-phenyl-CH₂—O—CH₂— CH N Me C—OMe O — I-531 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C-Me Me N O O I-532 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—OMe Me N O O I-533 COOH phenyl 3,4-di-OMe-phenyl-CH₂—O—CH₂— CH N OMe C-Me O — I-534 COOH phenyl methyl CH N O—CH₂—O—C O — I-535 COOH phenyl methyl CH N CH₂—CH₂—CH₂—C O — I-536 COOH phenyl 4-Cl-phenyl-CH₂—O—CH₂— CH N Me C-ethyl O — I-537 COOH phenyl HO—CH₂—CH₂— CH N O—CH₂—O—C O — I-538 COOH phenyl methyl N C-Me OMe N O O I-539 COOH phenyl methyl N C-ethyl Me N O O I-540 COOH phenyl phenyl-CH₂—O—CH₂— CH N CH₂—CH₂—CH₂—C O — I-541 COOH phenyl 4-OMe-phenyl-(CH₂)₂— N C—O—CH₂—O N O O I-542 COOH phenyl 4-OMe-phenyl-(CH₂)₂— CH C—NH(CH₃) Me N O O I-543 COOH phenyl HO—CH₂— CH N CF₃ C-ethyl O — I-544 COOH phenyl propyl CH N Me C—N(CH₃)₂ O — I-545 COOH phenyl methyl N C-Me Me N O O I-546 COOH phenyl methyl N C—OMe Me N O O I-547 COOH phenyl, naphthyl methyl CH N Me C-Me O O I-548 COOH phenyl-4-Cl- ethyl CH N CF₃ C-ethyl O O phenyl I-549 COOH 4-F-phenyl, propyl CH C-ethyl Me N O O 4-Cl-phenyl I-550 COOH naphthyl, 4-Cl- methyl CH C—OMe Me N O O phenyl I-551 COOH 4-Me-phenyl, 3,4-di-OMe-phenyl-(CH₂)₂— CH C-Me H N O O phenyl I-552 COOH naphthyl, naph- methyl CH C—CH₂—CH₂—CH₂ N O O thyl

The compounds of the present invention offer a new therapeutic potential for the treatment of hypertension, pulmonary high blood pressure, myocardial infarct, angina pectoris, arrhythmia, acute/chronic kidney failure, chronic cardiac insufficiency, renal insufficiency, cerebral vasospasms, cerebral ischemia, subarachnoid hemorrhages, migraine, asthma, atherosclerosis, endotoxic shock, endotoxin-induced organ failure, intravascular coagulation, restenosis after angioplasty and bypass operations, benign prostate hyperplasia, ischemic kidney failure and kidney failure or hypertension caused by intoxication, metastasis and growth of mesenchymal tumors such as prostate carcinoma, contrast agent-induced kidney failure, pancreatitis, gastrointestinal ulcers.

The invention further relates to combinations of endothelin receptor antagonists of the formula I and inhibitors of the renin-angiotensin system. Inhibitors of the renin-angiotensin system are renin inhibitors, angiotensin II antagonists and angiotensin-converting enzyme (ACE) inhibitors. Combinations of endothelin receptor antagonists of the formula I and ACE inhibitors are preferred.

The invention further relates to combinations of endothelin receptor antagonists of the formula I and calcium antagonists such as verapamil.

The invention further relates to combinations of endothelin receptor antagonists of the formula I and beta-blockers.

The invention further relates to combinations of endothelin receptor antagonists of the formula I and diuretics.

The invention further relates to combinations of endothelin receptor antagonists of the formula I and substances which block the action of VEGF (vascular endothelial growth factor). Substances of this type are, for example, antibodies directed against VEGF or specific binding proteins or alternatively low molecular weight substances which can specifically inhibit VEGF release or receptor binding.

The abovementioned combinations can be administered simultaneously or sequentially one after the other. They can be employed either in a single pharmaceutical formulation or alternatively in separate formulations. The administration form can also be different, for example the endothelin receptor antagonists can be administered orally and VEGF inhibitors can be administered parenterally.

These combination preparations are especially suitable for the treatment and prevention of hypertension and its sequelae, and for the treatment of cardiac insufficiency.

The good action of the compounds can be shown in the following experiments:

Receptor binding studies

For binding studies cloned human ET_(A)- or ET_(B) receptor-expressing CHO cells were employed.

Membrane preparation

The ET_(A) or ET_(B) receptor-expressing CHO cells were proliferated in DMEM NUT MIX F₁₂ medium (Gibco, No. 21331-020) with 10% fetal calf serum (PAA Laboratories GmbH, Linz, No. A15-022), 1 mM glutamine (Gibco No. 25030-024), 100 U/ml of penicillin and 100 μg/ml of streptomycin (Sigma No P 0781). After 48 hours, the cells were washed with PBS and incubated for 5 minutes at 37° C. with 0.05% trypsin-containing PBS. The mixture was then neutralized with medium and the cells collected by centrifugation at 300 x g.

For the membrane preparation, the cells were adjusted to a concentration of 10⁸ cells/ml of buffer (50 mM tris HCL buffer, pH 7.4) and then disintegrated by ultrasound Branson Sonifier 250, 40-70 seconds/constant/output [sic] 20).

Binding tests

For the ET_(A) and ET_(B) receptor binding test, the membranes were suspended in an incubation buffer (50 mM tris HC₁, pH 7.4 with 5 mM MnCl₂40 mg/ml of bacitracin and 0.2% BSA) in a concentration of 50 μg of protein per test batch and incubated at 25° C. with 25 pM [¹²⁵I]-ET₁ (ET_(A) receptor test) or 25 pM [¹²⁵I]-ET₃ (ET_(B) receptor test) in the presence and absence of test substance. The nonspecific binding was determined with 10-⁷ M ET₁. After 30 min, the free and the bound radioligand were separated by filtration through GF/B glass fiber filters (Whatman, England) on a Skatron cell collector (Skatron, Lier, Norway) and the filters were washed with ice-cold tris HCl buffer, pH 7.4 with 0.2% BSA.

The radioactivity collected on the filters was quantified using a Packard 2200 CA liquid scintillation counter.

Testing of the ET antagonists in vivo:

Male SD rats 250-300 g in weight were anesthetized with amobarbital, artificially respirated, vagotomized and pithed. The carotid artery and jugular vein were catheterized.

In control animals, the intravenous administration of 1 mg/kg of ET₁ [sic] leads to a marked blood pressure increase, which lasts for a relatively long period of time.

The test animals were injected i.v. (1 ml/kg) with the test compounds 30 min before ET1 [sic] administration. To determine the ET-antagonistic properties, the blood pressure changes in the test animals were compared with those in the control animals.

p.o. Testing of the ET receptor antagonists:

Male normotensive rats (Sprague Dawley, Janvier) 250-350 g in weight are orally pretreated with the test substances. 80 minutes later, the animals are anesthetized with urethane and the carotid artery (for blood pressure measurements) and the jugular vein (administration of big endothelin/endothelin 1) are catheterized.

After a stabilization phase, big endothelin (20 μg/kg, administration vol. 0.5 ml/kg) or ET1 [sic] (0.3 μg/kg, administration vol. 0.5 ml/kg) is given intravenously. Blood pressure and heart rates are recorded continuously for 30 minutes. The marked and long-lasting blood pressure changes are calculated as the area under the curve (AUC). To determine the antagonistic action of the test substances, the AUCs of the substance-treated animals are compared with the AUC of the control animals.

The compounds according to the invention can be administered orally or parenterally (subcutaneously, intravenously, intramuscularly, intraperitoneally) in a customary manner. Administration can also be carried out through the nasopharynx using vapors or sprays.

The dosage depends on the age, condition and weight of the patient and on the type of administration. As a rule, the daily dose of active compound is from approx. 0.5 to 100 mg/kg of body weight in the case of oral administration and from approx. 0.1 to 30 mg/kg of body weight in the case of parenteral administration.

The novel compounds can be used liquid or solid in the customary pharmaceutical administration forms, eg. as tablets, film-coated tablets, capsules, powders, granules, coated tablets, suppositories, solutions, ointments, creams or sprays. These are prepared in a customary manner. The active compounds can in this case be processed with the customary pharmaceutical auxiliaries such as tablet binders, fillers, preservatives, tablet disintegrants, flow-regulating agents, plasticizers, wetting agents, dispersants, emulsifiers, solvents, release-delaying agents, antioxidants and/or propellants (cf. H. Sucker et al.: Pharmazeutische Technologie [Pharmaceutical Technology], Thieme-Verlag, Stuttgart, 1991). The administration forms thus obtained normally contain the active compound in an amount from 0.1 to 90% by weight. 

We claim:
 1. A compound of formula I

where R¹ is tetrazole or a group

where R has the following meanings: a) a radical OR⁶ where R⁶ is: hydrogen, the cation of an alkali metal, the cation of an alkaline earth metal of a physiologically tolerable organic ammonium ion; C₃-C₈-cycloalkyl, C₁-C₈-alkyl, unsubstituted or substituted CH₂-phenyl, unsubstituted or substituted C₃-C₈-alkenyl or C₃-C₈-alkynyl or unsubstituted or substituted phenyl; b) a 5-membered heteroaromatic linked via a nitrogen atom; c) a group

where k can assume the values of 0, 1 and 2, p the values 1, 2, 3 and 4 and R⁷ is C₁-C₄-alkyl, C₃-C₈-cycloalkyl, C₃-C,-alkenyl, C₃-C₈-alkynyl or unsubstituted or substituted phenyl; d) a radical

where R⁸ is C₁-C₄-alkyl, C₃-C₈-alkenyl, C₃-C₈-alkynyl, C₃-C₈-cycloalkyl, it being possible for these radicals to carry a C₁-C₄-alkoxy, C₁-C₄-alkylthio and/or a phenyl radical; C₁-C₄-haloalkyl or unsubstituted or substituted phenyl; X is nitrogen or methine; Y is nitrogen if X is methine and Y is CR⁹ if X is nitrogen; Z is nitrogen; R² is C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, it being possible for these radicals to be unsubstituted or substituted; hydrogen, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkyl, C₃-C₆-alkenyloxy, C₃-C₆-alkynyloxy, C₁-C₄-alkylthio, C₁-C₄-alkylcarbonyl, C₁-C₄-alkoxycarbonyl, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, hydroxyl, carboxyl, amino; or CR² together with CR⁹ forms a 5- or 6-membered alkylene or alkenylene ring which can be unsubstituted or substituted, and where in each case one or more methylene group can be replaced by oxygen, sulfur, —NH or N(C₁-C₄-alkyl); R³ and R⁴ (which can be identical or different) are: phenyl or naphthyl, unsubstituted or substituted, or phenyl or naphthyl which are connected to one another in the ortho position via a direct bond, a methylene, ethylene or ethenylene group, an oxygen or sulfur atom or an SO₂—, NH— or N-alkyl group; unsubstituted or substituted C₃-C₈-cycloalkyl; R⁵ is hydrogen, C₁-C₈-alkyl, C₃-C₈-alkenyl or C₃-C₈-alkynyl, it being possible for these radicals to be unsubstituted or substituted; unsubstituted or substituted phenyl or naphthyl; a 5- or 6-membered heteroaromatic, having one to three nitrogen atoms and/or a sulfur or oxygen atom, and which can be unsubstituted or substituted; unsubstituted or substituted C₃-C₈-cycloalkyl; R⁹ is hydrogen, hydroxyl, NH₂, NH(C₁-C₄-alkyl), N(C₁-C₄-alkyl)₂, halogen, C₁-C₄-alkoxy, C₁-C₄-haloalkoxy or C₁--C₄-alkylthio; C₁-C₄-alkyl, C₂-C₄-alkenyl, C₂-C₄-alkynyl, it being possible for these radicals to be unsubstituted or substituted; or CR⁹ is linked with CR² as indicated above to give a 5- or 6-membered ring; W is sulfur, oxygen or a single bond; Q is oxygen or NH, with the proviso that if Q=NH, then W is a single bond or the physiologically tolerable salts, or the enantiomerically pure and diastereomerically pure forms.
 2. A drug preparation for oral and parenteral administration, comprising per individual dose, customary drug auxiliaries, and at least one compound of formula I as claimed in claim
 1. 3. A combination of the compound of formula I as claimed in claim 1 and one or more active compounds selected from inhibitors of the renin-angiotensin system.
 4. The combination claimed in claim 3, wherein the inhibitors of the renin-angiotensin system are renin inhibitors, angiotensin II antagonists, angiotensin-converting enzyme (ACE) inhibitors, mixed ACE/neutral endopeptidase (NEP) inhibitors β-blockers, diuretics, calcium antagonists and VEGF-blocking substances.
 5. A method of treating high blood pressure, pulmonary high blood pressure, myocardial infarct, angina pectoris, restenosis, arrhythmia, acute/chronic kidney failure, chronic cardiac insufficiency, renal insufficiency, cerebral vasospasms, cerebral ischemia, subarachnoid hemorrhages, migraine, asthma, atherosclerosis, endotoxic shock, endotoxin-induced kidney failure, kidney failure or hypertension caused by intoxication, metastasis and growth of mesenchymal tumors, contrast agent-induced kidney failure, pancreatitis, gastrointestinal ulcers, stroke, benign prostate hyperplasia or Raynaud's Syndrome caused or aggravated by abnormal release of endothelin, said method comprising administering to a human or animal in need of such treatment an effective amount of the compound of formula I as claimed in claim
 1. 6. The method of treating illnesses as defined in claim 5, wherein said illness is selected from the group consisting of chronic cardiac insufficiency, restenosis, high blood pressure, pulmonary high blood pressure, acute/chronic kidney failure, cerebral ischemia and benign prostate hyperplasia. 